Below, celebrity manicurist Barbara Warner tells Us Weekly how she gave the "Rolling in the Deep" singer, 23, her glossy, muted mani, which was on full display and received a ton of attention during the star's "Someone Like You " performance.

"The secret to pulling off a nude manicure is to keep your look classic," Warner tells Us. "To keep her look classic but modern, I filed Adele's nails into an oval shape reminiscent of the 40s but with an updated longer length."